Frequencies for v_config variable in vehnit dataset :

    VEHICLE |
CONFIGURATI |
         ON |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,106       83.28       83.28
          1 |         65        4.89       88.18
          2 |         24        1.81       89.98
          3 |         11        0.83       90.81
          4 |          6        0.45       91.27
          5 |          4        0.30       91.57
          6 |         96        7.23       98.80
          7 |          3        0.23       99.02
          8 |          1        0.08       99.10
         19 |          4        0.30       99.40
         20 |          1        0.08       99.47
         21 |          1        0.08       99.55
         70 |          3        0.23       99.77
         99 |          3        0.23      100.00
------------+-----------------------------------
      Total |      1,328      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016